Frederick salatiie



llnrrsio iilAlllES @rrrca FREDERICK SALATllE, OF JERSEY Cl'l Y, NEWJE'RSEi., 'ASSEGNOR T THE LITl-lO-OARBON COMPANY, OF NEW YORK, N. Y.

GOMPOSITEQN @F MATTER FOR LNSULATBNG PURPOSES.

SPECIFICATION forming part of Letters Patent No. 45:2,?t3li, dated May19, 1891. Application filed April 22, 1891. Serial No. 389,830. (Nospecimens.)

To all whom, it 772,001; concern.- I

Be it known that l, FREDERICK SALATHE, a citizen of the United States,residing in Jersoy City, in the county of Hudson and State. of NewJersey, have invonteda new and use-.

ful Composition of Matter for insulating Purposes, of which thefollowing is a specification.

The composition which 1- have devised is intended as an insulator, andmore particu- IO larly as an eificient Substitute in that connection forgutta-percha.

My improved composition consists, essentially, of a new hydrocarbonproduct, (which is of my own inventiom) gutta-percha, and

gum-shellac, in conjunction with which latter ingredient lmay also use.small proportions oi gum-dammar or gum-copal, although I profor to usethe gum-shellac alone.

The nature and attributes of the new by drocarbon product, as well asthe process by which it is obtained, are fully set forth and claimed byme in my application for Letters Patent filed March 6, 1891, bearingSerial No. 383,942, on which Letters Patent issue of 5 even dateherewith, and to which reference is hereby made for more completeinformation. It is suflicient here to say that the said hydrocarbonproduct is a resinoid hydrocarbon of the O l-l series, which hassubstantially the following analysis: carbon, 88.23; hydrogen, 11.59;oxygen, .06; sulphur, trace, the same beinga solid material with aspecific gravity of from 1 to 1.028, tough and of a glo sy jet-blackcolor, flexible and somewhat plastic at ordi- 3 5 nary temperature,soluble in naphtha,benz0le,

chloroform, bisulphide of carbon, partially in ether, completely inturpentine, rosin-Oils, &c., capable ofwvithstanding a temperature of600 Fahrenheit; and resisting alkalies and acids, excepting concentratednitric and concentrated sulphuric acids. lt i obtained from a naturalsubstanoe,-whiel1, siiiyfar as I am at present informed, is 'found i hthe State of Texas only, but which, possili y, may exist in .1, 5 otherlocalities, the treatment yrhich I employ for obtaining this productconsisting, essentially, in first separating the.,crudenatural substancefrom the sand or shell rock in which it ifs'found innature by means of asolvent,

then separating or driving off the solvcntfrom the crude material thusobtained, and finally injecting steam or hot air into the'said crudematerial in order to drive off the sulphur and volatile-oil constituentswhich are combined therewith, as well as to supply the said mate- 5 5rial with the oxygen which is lacking in the natural substance, all asmore fully set forth in my aforesaidapplication, SerialNo. 383,942.

In. the preparation of the composition'which 'is the subject of mypresent application its ingredients-viz., the hydrocarbon product,gutta-percha, and shellac-can be taken in various proportions. Oneformula which gives excellent results isi iiydrocarbon product, sixtyfive parts, by weight; gnttapercha, twenty-five parts, by Weight;gumshcllac, ten parts, by weight; but these proportions can be variedconsiderably-e. g., hydrocarbon product, fifty parts, by weight;gutta-percha, thirty-five parts, by weight; gum-she'llacgtii'if't eehparts'g'by weight; or by drocarbon product, fifty-five parts,by weight;

.gutta-percha, forty parts, by Weight; gumshellac, five parts, .byweight. The amalgamating or combining of these ingredients can beaccomplished in various ways. For example, the gutta-percha andgum-shellac can be melted together by steam heat, such as that of asteam-jacketed kettle, and into this molten mass the hydrocarbon 8oproductin' melted oonditioncanbe introduced, the whole mass then beingthoroughly mixed and amalgamatedby careful stirring; or thegutta-percha'and gum-shellac in solid form can'be mixed together bypassing them between fa panes: ewerful steanr'heated rolls, such as usedfdi'"disintegra'i;fing rubber. After the complete mixture otthose; twoingredicuts? the required proportion of the hydrocarhon product in solidform is gradually added to the mass, which latter is continuously passedbetween the disintegrating or masticnting rolls untl the 'whole mass isperfectly uniform njdl eneousij The composition thus obtained ss'ess'essulostantially all the 5 good qualities and characteristics ofguttapereha. It is very tough, has a somewhat higher melting-point than'gutta-percha, and is an absolute, non-conductor of electricity andnon-absorbent of water.

One advantage w.

it possesses over gutta-percha is that while the latter will becomeporous at a heat below 2123 Fahrenheit the composition under the sameconditions remains non-porous and unchanged, even when subjected to atemperat'r' '1: high as 300" Fahrenheit, thus fitting the latterforuses-for example, an insulati'ngcovering or protection forunderground conductors-to which gutta-perelmaloncbam not safely be put.Againjthe 'oelnposii, on while as efiicient as gutta-perehai for use'i'n connection with submarine cables, d' e,',uis very much cheaper thanthe latter.

Vires or electricconductors can be covered with this composition in thesame way and by the same means employed to coat conductors withgutta-percha, and when thus applied it mayor may not be covered with a.braided or other textile covering, such COYOri if, heir," mainlyrequired for overhead wi Ti e composition adheres most tenacior: to tloconductor and can be stripped there: mm on i r with di flieulty.

hat I claim herein as new and of my itventiou is A composition forinsulating purposes,co lsistiug, essentially, of gutta-poreha, gum-shliae, and the hereinbefore-deseribed new hydrocarbon product,substantially as hereinbefore set forth.

In testimony whereof Ialiix my signature in presence of two witnesses. v

FREDERICK SA-TJHIIJC.

Witnesses:

EWELL A. DICK, M. BAILEY.

cqr 'ct iofi in Letters Pattm No 452,765.;

I (Jefintefsigned It is hereby certifie dthatthe assignee, TheTithe-Carbon Companyfl in Le ttet's Pateilt' Np. 452,765, 9 mm; my '19,1891, upon the application of Frederick Salath,

vof Jersey City, New Jersey; for an improvement in Qempositiems. ofMatter for InsulatingP urposes, sho'fili-have been described armlepeeifigii as 'j'm Limo-Carbon 7 Company, a corporation of the State ofNew Jertey, instead of TheLitho-Gztrbou Oompmy ef' New York, N. 35.; andthat the said. Letters Patent should be read with this Q01- rectionthereip that the same may confm m to the record of the ease in thePatent- Office;

Sigeed, countersigned, and sealed this 16th day of game, A. D. 1891;

[SEAL] CYRUS BUSSEY, .Atsz'slant Secretary ojthe Interior.

O. E. MITCHELL,

Commissioner of Patents.

